The only thing that might be an indicator of pheromones in humans is a phenomenon that occurs among women:
When women are around each other for any length of time, their menstral cycles will start to coincide and, in time, will run on the same timeline. This is not just some freak coincidence that happened to me once, it has been proven time and time again all over the world. Within the past decade, some researchers have started debating whether the nature of this occurance is caused by pheromones, marking the first and only evidence of human pheromone interaction.

pheromone: an odorous substance or smell secreted by an organism that acts as a chemical messenger between members of the same or different species and serves as a foe repellent, territorial boundary or path marker, social heriarchy position indicator, child-parent bonding agent, or sexual lover/lover mate attractant. Pheromones may also regulate the reproductive ecology within a given species; an odoriferous substance that acts as a chemical messenger between individuals. By contrast, a hormone acts as a chemical messenger within the bloodstream of a single individual. In mammals, pheromones serve as foe repellents, boundary markers, child-parent attractants, and sex [lover-lover] attractants. See also hormone.